posted 9 years ago
Well, since it's on the front border I assume this is SOLELY on your property? I ask this for a reason, and I'm not sure how it works in Texas. In Kentucky, property line fence is considered property of both parties, i.e., if I put one up between me and a neighbor legally I can obligate them to pay for half of it. So obviously a neighbor would be less than thrilled about it being damaged. With that in mind, I'd check with the neighbor if the shoe fits.
Are we talking high-tensile fence? Grapes can get heavy, and depending on what grape you're growing may damage the fence (muscadines pack on WEIGHT and grow like crazy). Personally I'd put in a trellis. Something as simple as two 4x4 posts (depending on the running length), a top brace, and tensioned wire between the two will work. You can goodle one and two cordon trellis systems to get an idea. This way you can grow the vines to an appropriate height, as tension the wire as needed to offset the weight. Less than $100, and some manual labor, will get you a grape trellis that will last a LONG time assuming you take care of it. With one plant we're talking two to three 12ft 4x4's, some large gauge wire (12-14?), few bags of quickcrete to set the posts, and wire vices for the ends, or a ratcheting system like they use on fences. Would give a 6 feet to either side of the plant for it to grow out on the trellis, and that's giving it more room than it really needs. I think most commercial grapes need about 7-8 feet spacing. The other advantage is you can place the vines at a better working height, no bending over to tend it, and you can easily get to either side of the vine. Easier to net to keep the birds off as well.
The big thing with grapes is airflow around the fruit and foliage. Lack of it is going to result in disease issues and lost fruit. Grapes also prefer well-drained, less than fertile soil, rocky soil even works. I figure the guys growing grapes commercially and for wine know what they're doing so I'd be wise to follow their lead. Not to mention I'd rather do it right the first time (even at expense) than go back and try to fix mistakes later. The real advantage I see with the commercial system is the maintenance. Once you've got it trained to trellis, and a "trunk" established its as easy as pruning it back to its main form at the end of each growing season, as opposed to dealing with a tangled mess, that ultimately, if you're like me, will go un-maintained.